Core-Periphery Segregation in Evolving Prisoner's Dilemma Networks

1 Department of Political Science, University of California, San Diego, CA 92093, USA. 2 Mechanical Engineering Research Institute and Division of Web Science and Technology, KAIST, Daehak-ro, Dajeon 305-701, Korea. 3 School of Economics and Trade, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu, Daegu 702-701, Korea. 4 Department of Political Science and International Relations, Seoul National University, Gwanakro 1, Seoul 151-746, Korea. *To whom correspondence should be addressed. E-mail: [email protected]